What download speed will my line support

[castro]

I have a stable connection. My line rarely disconnects. What download speed could I reasonably expect to achieve? Sky have previously upped my limit so is it reasonable to ask them to increase it again. My son, who lives 200 m away gets download speeds in excess of 16mbs.

Sorry about the formatting.

ROUTER STATISTICS

System Up Time: 1694:32:18
Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
WAN MER 3124853 16793201 0 306 1344 443:38:09
LAN 12574479 8232541 0 632 212 1694:32:18
WLAN 955194 484623 0 564 45 443:37:51
ADSL Link Downstream Upstream
Connection Speed 13607 kbps 1104 kbps
Line Attenuation 24.0db 12.7db
Noise Margin 8.8db 8.3db

[Isitme]

You should also get more, there is a problem with your wiring somewhere. To rule out internal wiring, plug the router into your Test socket using only the cable supplied by Sky. Post your stats from there.
Check when the faceplate is removed that any extensions you have are dead.
How to test your ADSL in the Master Test Socket